package com.wst.wst_server.Config;

import com.wst.wst_server.fiflter.JwtAuthenticationTokenFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    private AuthenticationEntryPoint authenticationEntryPoint;

    @Autowired
    private AccessDeniedHandler accessDeniedHandler;
    @Autowired
    AuthenticationConfiguration authenticationConfiguration;
    @Autowired
    JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                //关闭csrf
                .csrf().disable()
                //不通过Session获取SecurityContext
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .authorizeRequests()
                // 对于登录接口 允许匿名访问
                .antMatchers("/**/*").anonymous()
//                .antMatchers("/login").anonymous()
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated();
        //把token校验过滤器添加到过滤器链
        http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
        //添加自定义异常处理器
        http.exceptionHandling().authenticationEntryPoint(authenticationEntryPoint).
                accessDeniedHandler(accessDeniedHandler);
        //允许跨域
        http.cors();
    }

    @Bean
    public AuthenticationManager authenticationManager() throws Exception {
        AuthenticationManager authenticationManager =
                authenticationConfiguration.getAuthenticationManager();
        return authenticationManager;
    }

    @Bean
    public PasswordEncoder getPasswordEncoder(){
        return new BCryptPasswordEncoder();
    }

}